CN102773585B - A kind of circuit reducing argon arc welding high-frequency and high-voltage and method thereof - Google Patents
A kind of circuit reducing argon arc welding high-frequency and high-voltage and method thereof Download PDFInfo
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- CN102773585B CN102773585B CN201210283411.7A CN201210283411A CN102773585B CN 102773585 B CN102773585 B CN 102773585B CN 201210283411 A CN201210283411 A CN 201210283411A CN 102773585 B CN102773585 B CN 102773585B
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Abstract
The present invention relates to a kind of circuit reducing argon arc welding high-frequency and high-voltage, including the rectification circuit being connected with electrical network EMC circuit；And be sequentially connected with inverter circuit, transforming circuit, boost pressure circuit, LC oscillating circuit, high-frequency and high-voltage output circuit, and the drive circuit being connected with inverter circuit, the on-off circuit being connected with drive circuit, the auxiliary power circuit boost pressure circuit being connected with on-off circuit and drive circuit, transforming circuit is high frequency transformer, its former limit is connected with inverter circuit, and secondary is connected with boost pressure circuit；Also include that main contacts one end is connected with high frequency transformer secondary, relay J D that the other end is connected with boost pressure circuit；The main control circuit being connected with relay J D main coil；The voltage detection module being connected with high-frequency and high-voltage output circuit；The control system being connected with on-off circuit, main control circuit.Invention prevents the interference that high frequency electric brings, and the source of welding current needing the high frequency starting the arc is caused damage, it is ensured that the use safety of machine.
Description
[technical field]
The present invention relates to a kind of argon arc welding, particularly to the circuit reducing high-frequency and high-voltage in a kind of argon arc welding
And method.
[background technology]
Argon arc welding technology is on the basis of the principle of conventional arc weldering, utilizes argon to metal wlding
Protection, logical super-high-current makes wlding be melted into liquid on by weldering base material and forms bath, makes to be welded metal
With a kind of solder technology that wlding reaches metallurgical binding, due to high-temperature fusion weld in constantly serve argon
Gas, makes wlding can not contact with the oxygen in air, thus prevents the oxidation of wlding, the most permissible
The non-ferrous metals such as welding copper, aluminum, steel alloy.
Existing high-frequency high-voltage circuit is broadly divided into and utilizes booster transformer boosting and utilize voltage-multiplying circuit liter
Pressure two ways, described below is the high-frequency and high-voltage arc stricking techniques utilizing booster transformer to boost, its
It is mainly used in argon arc welding machine and the cutting machine using high-frequency and high-voltage striking.Draw being applied to high-frequency and high-voltage
The source of welding current of arc device includes high-voltage power circuit, booster circuit, hand switch circuit, high frequency
High pressure on/off circuit and control circuit, this high voltage power supply is mainly produced by welder high-frequency main transformer
Raw, welding machine does not works, and high tension unit is also thus without startup；Booster circuit intensified transformator transformation
Form with impulse electricity electric capacity；Hand switch circuit based on specific alternating current power supply, rectified, filtering after
Isolated with control circuit by optocoupler；If high-frequency and high-voltage on/off main circuit is moved by relay
Making and formed, after hand switch signal produces, welding machine is started working, relay adhesive, high-tension electricity
Source is provided former limit alternating current power supply through relay for booster transformer by main transformer, by booster transformer transformation
Produced several kilovolts of high pressure ensure machine initial arc to Igniting unit two ends；Control circuit is for the supercharging starting the arc
Circuit, is mainly used in the machine on the low side to floating voltage, designs to increase starting the arc success rate, defeated
Enter signal and be added to outfan at the signal of main transformer former preparing sample about about 100V through all wave rectification,
Under Light Condition, be equivalent to one voltage of outfan superposition, reach the purpose of supercharging, enter welding
After state, owing to outfan arc voltage is pulled low, transistor base current potential is pulled low, and relay disconnects,
High frequency and supercharging arc striking circuit cut off, inoperative；To sum up, in the prior art, the shortcoming existed
Mainly have: (one), traditional source of welding current there is no good anti-high-voltage earthing device, and output no-load
Voltage is the most higher, and welding machine the most likely personal safety to operator brings hidden danger；
(2), in the starting the arc high pressure of argon arc welding with high frequency, it is improper to protect, and high-frequency high-voltage current will be anti-
To the rectifier tube punctured in secondary rectification, even damage the circuit that main transformer primary coil is connected；(3),
Hand switch circuit because is connected with outfan, thus hand switch place circuit should with main circuit, control circuit,
Auxiliary power circuit is isolated, and prevents outfan high frequency from sealing in hand switch circuit and making whole welder circuit produce
Raw serious interference；(4), conventional inversion welding source does not do with anti-High-frequency Interference ground connection
To integrated, make welding machine back panel wiring not science, affect whole inside and walk Wiring technology.
[summary of the invention]
Security performance in order to overcome existing argon arc welding to exist is low, in starting the arc high pressure with high frequency, weldering
Dynamo-electric Louis produces interference and integrated low technical problem, and the first object of the present invention is providing one
Plant the circuit reducing argon arc welding high-frequency and high-voltage
The second object of the present invention is to provide a kind of electricity according to above-mentioned reduction argon arc welding high-frequency and high-voltage
The method that road realizes reducing argon arc welding high-frequency and high-voltage.
The present invention solves above-mentioned first technical problem and be the technical scheme is that
A kind of circuit reducing argon arc welding high-frequency and high-voltage is provided, including:
The rectification circuit that input is connected with electrical network EMC circuit；
The inverter circuit being connected with described rectification circuit output end；
The transforming circuit being connected with described inverter circuit and drive circuit；
The boost pressure circuit being connected with described transforming circuit；
The LC oscillating circuit being connected with described boost pressure circuit；
The high-frequency and high-voltage output circuit being connected with described LC oscillating circuit；
The on-off circuit being connected with described drive circuit；
And, the auxiliary power circuit being connected with described on-off circuit and drive circuit respectively；
Described boost pressure circuit is high frequency transformer, the former limit of described high frequency transformer and inverter circuit outfan
Connecting, described high frequency transformer secondary is connected with boost pressure circuit；And, also include:
Main contacts one end is connected with high frequency transformer secondary, the relay that the other end is connected with boost pressure circuit
JD；
The main control circuit being connected with described relay J D main coil；
The voltage detection module being connected with described main output circuit；
The control system being connected with described on-off circuit and main control circuit.
According to a preferred embodiment of the invention: the secondary of described high frequency transformer include first level around
Group N1, second subprime winding N2 and for the third time level winding N3, described first secondary windings N1,
Second subprime winding N2 is connected with high-frequency and high-voltage output circuit, and described third time level winding N3 is through continuing
Electrical equipment JD is connected with boost pressure circuit.
According to a preferred embodiment of the invention: described high frequency transformer is ultracrystallite transformator.
According to a preferred embodiment of the invention: described boost pressure circuit includes absorption resistance R5, electric capacity
C2 and booster transformer T, described absorption resistance R5 one end, electric capacity C2 one end and high frequency transformation
Device secondary the first secondary windings N1 one end connects, the absorption resistance R5 other end, the electric capacity C2 other end
One end, limit former with booster transformer T is connected, described relay J D main contacts one end and high frequency transformer
Secondary the first secondary windings N1 other end connects, and main contacts other end limit former with booster transformer T is another
One end connects, and main coil is connected with main control circuit.
According to a preferred embodiment of the invention: described LC oscillating circuit include electric capacity C3-C5,
One current-limiting resistance R6, electric discharge mouth FDZ and striking coil, described electric capacity C3-C5 one end and supercharging
Transformator T secondary one end connects, and the other end is connected with electric discharge mouth FDZ one end, described first current limliting
Resistance R6 one end is connected with the booster transformer T secondary other end, the first current-limiting resistance R6 other end
Being connected with the electric discharge mouth FDZ other end, described striking coil side is connected with electric discharge mouth FDZ.
According to a preferred embodiment of the invention: described high-frequency and high-voltage output circuit includes that argon arc welding exports
Anode, argon arc welding output negative terminal and hands weldering output plus terminal, described argon arc welding output plus terminal becomes with high frequency
Depressor secondary second subprime winding N2 one end connect, described hands weldering output plus terminal respectively through diode with
High frequency transformer secondary third time level winding N3 one end, the first secondary windings N1 other end connect,
Described argon arc welding output negative terminal is connected with hands weldering output plus terminal through striking coil opposite side.
According to a preferred embodiment of the invention: described on-off circuit include resistance R4, R65, R66,
R67, R68, R99, Zener diode D5, D7, D8, transformator T1, shunt resistance R2,
Diode D1-D4, D6, D33, filter resistance R3, filter capacitor C1, the second current-limiting resistance
R1, optocoupler U1, audion Q1-Q2, electric capacity C14, C15, inductance L2, L3, described resistance
R4 one end is connected with alternating current power supply AC, resistance R4 other end one end, limit former with transformator T1 respectively,
Zener diode D7 anode connects, and Zener diode D7 negative electrode is with Zener diode D8 negative electrode even
Connecing, Zener diode D8 anode is connected with shunt resistance R2 one end, alternating current power supply AC, shunting
Resistance R2 other end limit former with the transformator T1 other end is connected, and described transformator T1 secondary is with manual
Switch CON1 connects, and described diode D1-D4 is in parallel with shunt resistance R2, described filter resistance
R3, filter capacitor C1 are in parallel with diode D1-D4 respectively, described filter resistance R3 one end, filter
Ripple electric capacity C1 positive pole is through Zener diode D5, the second current-limiting resistance R1 and optocoupler U1 input one
Side connects, and the described filter resistance R3 other end, filter capacitor C1 negative pole are another with optocoupler U1 input
Side connects, described optocoupler U1 outfan side and diode D6 negative electrode, audion Q1 current collection
Pole connects, and optocoupler U1 outfan opposite side is connected with audion Q1 base stage, described diode D6
Anode is connected with inductance L3 one end, and audion Q1 emitter stage is connected with inductance L2 one end, inductance
The L3 other end is connected with resistance R66 one end, electric capacity C14 one end, the inductance L2 other end and electric capacity
The C14 other end, resistance R65, R99 one end connect, described resistance R67 one end, diode D33
Negative electrode, electric capacity C15 one end are connected with the resistance R99 other end, audion Q2 base stage respectively, resistance
The R67 other end, diode D33 anode, the electric capacity C15 other end respectively with the resistance R65 other end,
Audion Q2 emitter stage connects, and described audion Q2 colelctor electrode is with resistance R68, control system even
Connect.
According to a preferred embodiment of the invention: described high-frequency and high-voltage output circuit is also with pressure limiting circuit even
Connecing, described pressure limiting circuit includes Wiring port PCON1-PCON4, varistor R7-R14, electricity
Resistance R15-R17, electric capacity C6-C11, described Wiring port PCON1 is connected with Remote, described
Wiring port PCON2 is connected with argon arc welding output plus terminal, described Wiring port PCON3 and argon arc
Weldering output negative terminal connects, and described Wiring port PCON4 is connected with hands weldering output plus terminal, described pressure-sensitive
Resistance R7-R14 is connected in series, and its one end is connected with Wiring port PCON3, the other end and wiring
Port PCON3, electric capacity C9-C11 one end, resistance R17 one end connect, described resistance R15-R16
One end is connected with the electric capacity C10-C11 other end, and the other end is connected with electric capacity C6-C8 one end, electric capacity
The C7-C8 other end and the electric capacity C9 other end, the resistance R17 other end and Wiring port PCON2
Connecting, the electric capacity C6 other end is connected with Wiring port PCON1.
According to a preferred embodiment of the invention: described control system be model be the control of LPC2134
Coremaking sheet.
According to a preferred embodiment of the invention: the turn ratio of described transformator T1 primary and secondary side is
1∶1。
According to a preferred embodiment of the invention: described main control circuit include current-limiting resistance R207,
R73, audion Q13, high frequency relay K1, described current-limiting resistance R207 one end and control system
12 connect, and the other end is connected with audion Q13 base stage through current-limiting resistance R73, described audion Q13
Colelctor electrode is connected with high frequency relay K1 coil, described high frequency relay K1 main contacts and relay
JD main coil connects.
According to a preferred embodiment of the invention: described voltage detection module includes being connected to striking
The inserted sheet CP1 and inserted sheet CP2 of coil side two end.
The present invention solves above-mentioned second technical problem and be the technical scheme is that
A kind of method reducing argon arc welding high-frequency and high-voltage is provided, comprises the following steps: described on-off circuit
Closing, circuit does not works；Described on-off circuit is opened, and circuit works；
The concrete steps of described circuit work include:
The first step, drive circuit drive inverter circuit to make；
Second step, described on-off circuit output low level signal give control system, and described control system is defeated
Going out high level signal and give main control circuit, described main control circuit output control relay JD closes letter
Number；
3rd step, described high frequency transformer secondary connect with boost pressure circuit, and described boost pressure circuit is to described
High frequency transformer secondary output voltage supercharging；
4th step, described boost pressure circuit output high tension voltage, produces institute through described LC oscillating circuit
Stating the voltage of high-frequency and high-voltage, described high-frequency and high-voltage voltage is through high-frequency and high-voltage output circuit output services；
5th step, described voltage detection module detect the voltage of described high-frequency and high-voltage output circuit；
Control of Voltage relay J D that 6th step, described control system detect according to voltage detection module
Guan Bi and disconnection.
According to a preferred embodiment of the invention: described 6th step specifically includes following steps:
1), described voltage detection module detect described high-frequency and high-voltage output circuit output voltage constant,
Control system is failure to actuate；
2), described voltage detection module detect described high-frequency and high-voltage output circuit output voltage reduce,
Control system output low level signal gives main control circuit, main control circuit output control relay JD
Cut-off signal.
Relative to prior art, the invention have the benefit that
1, the present invention uses the transforming circuit of high frequency transformer, and is connected with boost pressure circuit by relay
Connecing, Guan Bi and disconnection by control system and master control circuit controls relay realize transforming circuit
Connection with boost pressure circuit and disconnection, be effectively prevented the interference that high frequency electric brings, and to needing
The source of welding current wanting the high frequency starting the arc causes damage, it is ensured that the use safety of machine；
2, in the safe type inspection of national standard, the requirement of butt welding machine is strict, and machine passes through
Safety test and safety testing, meet the requirements of the standard, and improves safety when product uses
Energy；
3, circuit volume of the present invention is little, lightweight, components and parts are simple, integrated level is high, low cost and
Easy to connect, facilitate user to a great extent, reduce output no-load simultaneously, stabilize welding
Voltage, also has the stability of the source of welding current and safety and improves significantly.
[accompanying drawing explanation]
Fig. 1. the system framework figure of the circuit reducing argon arc welding high-frequency and high-voltage of the present invention；
Fig. 2. the present invention reduces the circuit diagram of the circuit of argon arc welding high-frequency and high-voltage；
Fig. 3. the present invention reduces the on-off circuit figure of the circuit of argon arc welding high-frequency and high-voltage；
Fig. 4. the present invention reduces the pressure limiting circuit figure of the circuit of argon arc welding high-frequency and high-voltage；
Fig. 5. the present invention reduces the method flow diagram of argon arc welding high-frequency and high-voltage.
[detailed description of the invention]
The invention will be further described with embodiment below in conjunction with the accompanying drawings.
Refering to shown in Fig. 1, the present invention provides a kind of circuit reducing argon arc welding high-frequency and high-voltage, including:
The rectification circuit 1 that input is connected with electrical network EMC circuit；
The inverter circuit 2 being connected with described rectification circuit 1 outfan；
The transforming circuit 3 being connected with described inverter circuit 2 and drive circuit 8；
The boost pressure circuit 4 being connected with described transforming circuit 3；
The LC oscillating circuit 5 being connected with described boost pressure circuit 4；
The high-frequency and high-voltage output circuit 6 being connected with described LC oscillating circuit 5；
The on-off circuit 7 being connected with described drive circuit 8；
And, the auxiliary power circuit 9 being connected with described on-off circuit 7 and drive circuit 8 respectively；
Described boost pressure circuit 3 is high frequency transformer, and the former limit of described high frequency transformer is defeated with inverter circuit 2
Going out end to connect, described high frequency transformer secondary is connected with boost pressure circuit 4；And, also include:
Main contacts one end is connected with high frequency transformer secondary, the relay that the other end is connected with boost pressure circuit 4
Device JD；
The main control circuit 10 being connected with described relay J D main coil；
The voltage detection module 11 that output circuit is connected is gone out with master；
The control system 12 being connected with described on-off circuit 7 and main control circuit 10, wherein controls
System 12 be model be the control chip of LPC2134.
Refering to shown in Fig. 2, wherein, the secondary of described high frequency transformer include the first secondary windings N1,
Second subprime winding N2 and third time level winding N3, described first secondary windings N1, for the second time
Level winding N2 is connected with high-frequency and high-voltage output circuit 6, and described third time level winding N3 is through relay
JD is connected with boost pressure circuit 4, and wherein said high frequency transformer is ultracrystallite transformator.
Described main control circuit 10 includes that current-limiting resistance R207, R73, audion Q13, high frequency continue
Electrical equipment K1, described current-limiting resistance R207 one end is connected with control system 12, and the other end is through current limliting electricity
Resistance R73 is connected with audion Q13 base stage, described audion Q13 colelctor electrode and high frequency relay K1
Coil connects, and described high frequency relay K1 main contacts is connected with relay J D main coil.
It addition, described boost pressure circuit 4 includes absorption resistance R5, electric capacity C2 and booster transformer T,
Described absorption resistance R5 one end, electric capacity C2 one end and high frequency transformer secondary the first secondary windings N1
One end connects, the absorption resistance R5 other end, the electric capacity C2 other end and the former limit of booster transformer T one
End connects, described relay J D main contacts one end and high frequency transformer secondary the first secondary windings N1
The other end connects, and main contacts other end limit former with the booster transformer T other end is connected, main coil and master
Control circuit 10 connects；Described LC oscillating circuit 5 includes electric capacity C3-C5, the first current limliting electricity
Resistance R6, electric discharge mouth FDZ and striking coil, described electric capacity C3-C5 one end and booster transformer T
Secondary one end connects, and the other end is connected with electric discharge mouth FDZ one end, described first current-limiting resistance R6
One end is connected with the booster transformer T secondary other end, the first current-limiting resistance R6 other end and electric discharge mouth
The FDZ other end connects, and described striking coil side is connected with electric discharge mouth FDZ；Described high frequency is high
Voltage follower circuit 6 includes argon arc welding output plus terminal, argon arc welding output negative terminal and hands weldering output plus terminal,
Described argon arc welding output plus terminal is connected with high frequency transformer secondary second subprime winding N2 one end, described
Hands weldering output plus terminal respectively through diode and high frequency transformer secondary third time level winding N3 one end, the
The one secondary windings N1 other end connects, and described argon arc welding output negative terminal is through striking coil opposite side and hands
Weldering output plus terminal connects.
Refering to shown in Fig. 3, described on-off circuit 7 include resistance R4, R65, R66, R67,
R68, R99, Zener diode D5, D7, D8, transformator T1, shunt resistance R2, diode
D1-D4, D6, D33, filter resistance R3, filter capacitor C1, the second current-limiting resistance R1, optocoupler
U1, audion Q1-Q2, electric capacity C14, C15, inductance L2, L3, described resistance R4 one end with
Alternating current power supply AC connects, the resistance R4 other end one end, limit former with transformator T1, voltage stabilizing two respectively
Pole pipe D7 anode connects, and Zener diode D7 negative electrode is connected, surely with Zener diode D8 negative electrode
Pressure diode D8 anode is connected with shunt resistance R2 one end, alternating current power supply AC, shunt resistance R2
Other end limit former with the transformator T1 other end is connected, described transformator T1 secondary and hand switch
CON1 connects, and described diode D1-D4 is in parallel with shunt resistance R2, described filter resistance R3,
Filter capacitor C1 is in parallel with diode D1-D4 respectively, described filter resistance R3 one end, filtered electrical
Hold C1 positive pole through Zener diode D5, the second current-limiting resistance R1 with optocoupler U1 input side even
Connect, the described filter resistance R3 other end, filter capacitor C1 negative pole and optocoupler U1 input opposite side
Connecting, described optocoupler U1 outfan side is with diode D6 negative electrode, audion Q1 colelctor electrode even
Connecing, optocoupler U1 outfan opposite side is connected with audion Q1 base stage, described diode D6 anode
Being connected with inductance L3 one end, audion Q1 emitter stage is connected with inductance L2 one end, and inductance L3 is another
One end is connected with resistance R66 one end, electric capacity C14 one end, the inductance L2 other end and electric capacity C14
The other end, resistance R65, R99 one end connect, described resistance R67 one end, diode D33 the moon
Pole, electric capacity C15 one end are connected with the resistance R99 other end, audion Q2 base stage respectively, resistance
The R67 other end, diode D33 anode, the electric capacity C15 other end respectively with the resistance R65 other end,
Audion Q2 emitter stage connects, described audion Q2 colelctor electrode and resistance R68, control system 12
Connecting, wherein, the turn ratio of transformator T1 primary and secondary side is 1: 1；
Alternating current power supply AC is 20V voltage, and it passes through Zener diode pipe D7, D8 and transformator
T1 through shunt resistance R2 shunting and by diode D1-D4 rectification after, for optocoupler U1 provide whether can
The magnitude of voltage of conducting；Particularly as follows: when hand switch CON1 off-state, the former limit of transformator T1
Being equivalent to a bigger resistance, PCON1 is input to the exchange 20V signal of alternating current power supply AC and passes through
Zener diode D7, D8 pressure limiting, and cannot be made by the voltage after diode D1-D4 rectification
Optocoupler U1 turns on；When hand switch CON1 closes, the resistance fall of transformator T1 primary coil
Low, the magnitude of voltage after diode D1-D4 rectification increases, and now has enough voltage and makes optocoupler U1
Conducting, by+15V the voltage that is connected with resistance R66 through resistance R66, inductance L3, diode
D6, audion Q1, inductance L2 relief Q2 turn on, and make the PT_TIG of control chip LPC2134
Current potential drags down, thus sends the actuating signal driving main control circuit 10.
Refering to shown in Fig. 4, described high-frequency and high-voltage output circuit 6 is also connected with pressure limiting circuit, described limit
Volt circuit include Wiring port PCON1-PCON4, varistor R7-R14, resistance R15-R17,
Electric capacity C6-C11, described Wiring port PCON1 are connected with Remote, described Wiring port
PCON2 is connected with argon arc welding output plus terminal, and described Wiring port PCON3 exports negative terminal with argon arc welding
Connecting, described Wiring port PCON4 is connected with hands weldering output plus terminal, described varistor R7-R14
Being connected in series, its one end is connected with Wiring port PCON3, the other end and Wiring port PCON3,
Electric capacity C9-C11 one end, resistance R17 one end connect, described resistance R15-R16 one end and electric capacity
The C10-C11 other end connect, the other end is connected with electric capacity C6-C8 one end, electric capacity C7-C8 another
End is connected with the electric capacity C9 other end, the resistance R17 other end and Wiring port PCON2, electric capacity
The C6 other end is connected with Wiring port PCON1；Wherein, the varistor R7-R14 at two ends will draw
The effective clamper of arc coil both end voltage is at a desired value, and remainder is then by electric capacity C10, C11
Flowing to the earth with resistance R15, R16, Wiring port PCON2 is connected with argon welding weldering output plus terminal,
Electric capacity C9, the effect of resistance R14 between Wiring port PCON2 and Wiring port PCON4 are
Reduce output no-load voltage, make welding output voltage steady；And the effect of electric capacity C7, C8 is to be anti-
Only output biases and designs.
Refering to shown in Fig. 5, and by above-mentioned design, the operation principle of system is:
First, during the start of argon arc welding machine, line voltage enters rectification circuit 1, rectification through EMC
Circuit 1 be with common rectifier bridge and absorb filter capacitor composition, rectified after DC voltage then enter
Entering inverter circuit 2, when without hand switch CON1 signal, inverter circuit 2 is idle, when
Hand switch CON1 mono-starts, and drive circuit 8 sends driving signal and drives inverter circuit 2 to work,
Inverter circuit enters transforming circuit 3, herein because of transforming circuit 3 after direct current is transformed into high-frequency alternating current
Mainly being made up of a ultracrystallite transformator, effect is that high voltage direct current is transformed into appropriate electrical arc welding institute
The low pressure needed.
Then, after hand switch CON1 starts, main control circuit 10 produces at P end TO ARM
A raw high level signal, makes audion Q13 turn on through current-limiting resistance R207 Yu R73, and then high frequency
Relay K 1 adhesive, and then relay J D closes and starts working, by transforming circuit 3 secondary
Low-voltage produced by first secondary windings N1 is sent to boost pressure circuit 4.
And after hand switch CON1 starts, on-off circuit 7 exports high level signal and gives control system
12, it may be assumed that the control chip of LPC2134, it produces a high level and gives main control circuit 10, and it is by P
End TO ARM input makes audion Q13 turn on, and high frequency relay K1 adhesive, continues then in succession
Electrical equipment JD Operating In Persistent Current Mode, high frequency transformer secondary connects with boost pressure circuit 4, and transforming circuit 3 is secondary
Low-voltage produced by the first secondary windings N1 of limit is sent to boost pressure circuit 4, then by boost pressure circuit 4
In booster transformer T voltage boost that high frequency transformer secondary the first secondary windings N1 is exported turn
Become suitable for the voltage of the up to 4000V of striking, its booster transformer T former limit one C2 of string and suction
Receiving resistance R5 is in order to avoid the magnetic bias of booster transformer T is saturated, and electric discharge mouth FDZ is directly connected on
4000V high-voltage output end, when not connecing Igniting unit, electric discharge mouth FDZ two ends air is breakdown,
Form electric arc, when accessing after Igniting unit, the high-voltage output end of booster transformer T by electric capacity C3,
C4, C5 charge, electric discharge mouth FDZ distance determine electric capacity C3, C4, C5 two ends charging voltage and
Frequency, when electric capacity C3, C4, C5 both end voltage, be charged to can be with disruptive discharge mouth FDZ two ends air
Time, electric capacity C3, C4, C5 start electric discharge, will instantaneous produce at the striking coil two ends of Igniting unit
High-voltage signal, and will be by the electric current of high-frequency and high-voltage on striking coil, its technical parameter requires strict,
Its quality is the deciding factor of starting the arc difficulty or ease, welding effect.
After high-frequency and high-voltage output circuit 6 has high-frequency high-voltage current, it is ensured that the starting the arc, if can protect
Improper, high-frequency high-voltage current will rectifier tube in reverse breakdown secondary rectification, even damage transformation electricity
The circuit that the primary coil of the transformer primary side in road 3 is connected, and, high-frequency and high-voltage is simply rising
Use during arc, be just no longer necessary to after the starting the arc, so high frequency transformer secondary and supercharging electricity need to be disconnected in good time
The connection on road 4,
When, after striking success, the Control of Voltage that control system 12 detects according to voltage detection module 11 continues
The Guan Bi of electrical equipment JD and disconnection, if i.e. voltage detection module 11 detects the output electricity of main output circuit
Pressing constant, control system 12 is failure to actuate；If voltage detection module 11 detects the defeated of main output circuit
Going out voltage to reduce, control system 12 output low level signal gives main control circuit 10, main control circuit
10 outputs control high frequency relay K1 and disconnect, and then disconnect relay J D, thus complete high frequency
Quitting work of high tension generator, wherein high frequency relay K1 and relay J D Main Function be by
Effectively isolate between transforming circuit 3, boost pressure circuit 4 and control system 12.
The present invention after above-mentioned circuit design and its reduce argon arc welding high-frequency and high-voltage realization
After flow process, have advantages in that
1, circuit structure of the present invention and manufacturing process are very simple, and implementation cost is the lowest, not only ensures
Stablizing of machine performance, it is often more important that ensure that the personal safety of user, to a great extent top
User；
2, circuit can use plug-in type to connect, and only has several simple patch cords just by control circuit
And the high-frequency and high-voltage interference and insulation between on-off circuit 7, high-frequency and high-voltage outfan, it is ensured that equipment
Use safety, improve the service life of machine；
3, the present invention may be used for DC inverted tig welder, inversion AC/DC argon arc welder, inversion
Air plasma cutter and other welding and cutting device.
And the present invention is by many experiments, has been used successfully to T&R alternating current-direct current numeral argon arc welding
MultiwaveACDC series, without occurring that any interference, welder performance be stable, reliable operation.
Foregoing detailed description is only exemplary description, and those skilled in the art are being protected without departing from the present invention
In the case of the scope and spirit protected, various embodiment can be designed according to different being actually needed.
Claims (10)
1. the circuit reducing argon arc welding high-frequency and high-voltage, it is characterised in that the circuit of described reduction argon arc welding high-frequency and high-voltage includes:
The rectification circuit (1) that input is connected with electrical network EMC circuit；
The inverter circuit (2) being connected with described rectification circuit (1) outfan；
The transforming circuit (3) being connected with described inverter circuit (2) and drive circuit (8)；
The boost pressure circuit (4) being connected with described transforming circuit (3)；
The LC oscillating circuit (5) being connected with described boost pressure circuit (4)；
The high-frequency and high-voltage output circuit (6) being connected with described LC oscillating circuit (5)；
The on-off circuit (7) being connected with described drive circuit (8)；
And, the auxiliary power circuit (9) being connected with described on-off circuit (7) and drive circuit (8) respectively；
Described transforming circuit (3) is high frequency transformer, and the former limit of described high frequency transformer is connected with inverter circuit (2) outfan, and described high frequency transformer secondary is connected with boost pressure circuit (4)；And, also include:
Main contacts one end is connected with high frequency transformer secondary, the relay (JD) that the other end is connected with boost pressure circuit (4)；
The main control circuit (10) being connected with described relay J D main coil；
Voltage detection module (11) is main circuit voltage signal detection；
The control system (12) being connected with described on-off circuit (7) and main control circuit (10).
The circuit of reduction argon arc welding high-frequency and high-voltage the most according to claim 1, it is characterized in that: the secondary of described high frequency transformer includes the first secondary windings N1, second subprime winding N2 and third time level winding N3, described third time level winding N3, second subprime winding N2 are connected with high-frequency and high-voltage output circuit (6), and described first secondary windings N1 is connected with boost pressure circuit (4) through relay J D.
The circuit of reduction argon arc welding high-frequency and high-voltage the most according to claim 1 and 2, it is characterised in that: described high frequency transformer is ultracrystallite transformator.
The circuit of reduction argon arc welding high-frequency and high-voltage the most according to claim 2, it is characterized in that: described boost pressure circuit (4) includes absorption resistance R5, electric capacity C2 and booster transformer T, described absorption resistance R5 one end, electric capacity C2 one end is connected with high frequency transformer secondary the first secondary windings N1 one end, the absorption resistance R5 other end, one end, electric capacity C2 other end limit former with booster transformer T is connected, described relay J D main contacts one end is connected with high frequency transformer secondary the first secondary windings N1 other end, main contacts other end limit former with the booster transformer T other end is connected, main coil is connected with main control circuit (10).
The circuit of reduction argon arc welding high-frequency and high-voltage the most according to claim 3, it is characterized in that: described LC oscillating circuit (5) includes electric capacity C3-C5, the first current-limiting resistance R6, electric discharge mouth FDZ and striking coil, described electric capacity C3-C5 one end is connected with booster transformer T secondary one end, the other end is connected with electric discharge mouth FDZ one end, described first current-limiting resistance R6 one end is connected with the booster transformer T secondary other end, the first current-limiting resistance R6 other end is connected with the electric discharge mouth FDZ other end, and described striking coil side is connected with electric discharge mouth FDZ.
The circuit of reduction argon arc welding high-frequency and high-voltage the most according to claim 2, it is characterized in that: described high-frequency and high-voltage output circuit (6) includes argon arc welding output plus terminal, argon arc welding output negative terminal and hands weldering output plus terminal, described argon arc welding output plus terminal is connected with high frequency transformer secondary second subprime winding N2 one end, described hands weldering output plus terminal is connected with high frequency transformer secondary third time level winding N3 one end, the second subprime winding N2 other end through diode respectively, and described argon arc welding output negative terminal is connected with hands weldering output plus terminal through striking coil opposite side.
nullThe circuit of reduction argon arc welding high-frequency and high-voltage the most according to claim 5，It is characterized in that: described on-off circuit (7) includes resistance R4、R65、R66、R67、R68、R99、Zener diode D5、D7、D8、Transformator T1、Shunt resistance R2、Diode D1-D4、D6、D33、Filter resistance R3、Filter capacitor C1、Second current-limiting resistance R1、Optocoupler U1、Audion Q1-Q2、Electric capacity C14、C15、Inductance L2、L3，Described resistance R4 one end is connected with alternating current power supply AC，Resistance R4 other end one end, limit former with transformator T1 respectively、Zener diode D7 anode connects，Zener diode D7 negative electrode is connected with Zener diode D8 negative electrode，Zener diode D8 anode and shunt resistance R2 one end、Alternating current power supply AC connects，Shunt resistance R2 other end limit former with the transformator T1 other end is connected，Described transformator T1 secondary is connected with hand switch CON1，Described diode D1-D4 is in parallel with shunt resistance R2，Described filter resistance R3、Filter capacitor C1 is in parallel with diode D1-D4 respectively，Described filter resistance R3 one end、Filter capacitor C1 positive pole is through Zener diode D5、Second current-limiting resistance R1 is connected with optocoupler U1 input side，The described filter resistance R3 other end、Filter capacitor C1 negative pole is connected with optocoupler U1 input opposite side，Described optocoupler U1 outfan side and diode D6 negative electrode、Audion Q1 colelctor electrode connects，Optocoupler U1 outfan opposite side is connected with audion Q1 base stage，Described diode D6 anode is connected with inductance L3 one end，Audion Q1 emitter stage is connected with inductance L2 one end，The inductance L3 other end and resistance R66 one end、Electric capacity C14 one end connects，The inductance L2 other end and the electric capacity C14 other end、Resistance R65、R99 one end connects，Described resistance R67 one end、Diode D33 negative electrode、Electric capacity C15 one end respectively with the resistance R99 other end、Audion Q2 base stage connects，The resistance R67 other end、Diode D33 anode、The electric capacity C15 other end respectively with the resistance R65 other end、Audion Q2 emitter stage connects，Described audion Q2 colelctor electrode and resistance R68、Control system (12) connects.
nullThe circuit of reduction argon arc welding high-frequency and high-voltage the most according to claim 6，It is characterized in that: described high-frequency and high-voltage output circuit (6) is also connected with pressure limiting circuit，Described pressure limiting circuit includes Wiring port PCON1-PCON4、Varistor R7-R14、Resistance R15-R17、Electric capacity C6-C11，Described Wiring port PCON1 is connected with Remote，Described Wiring port PCON2 is connected with argon arc welding output plus terminal，Described Wiring port PCON3 is connected with argon arc welding output negative terminal，Described Wiring port PCON4 is connected with hands weldering output plus terminal，Described varistor R7-R14 is connected in series，Its one end is connected with Wiring port PCON3，The other end and electric capacity C9-C11 one end、Resistance R17 one end connects，Described resistance R15-R16 one end is connected with the electric capacity C10-C11 other end，The other end is connected with electric capacity C6-C8 one end，The electric capacity C7-C8 other end and the electric capacity C9 other end、The resistance R17 other end and Wiring port PCON2 connect，The electric capacity C6 other end is connected with Wiring port PCON1.
9. the method reducing argon arc welding high-frequency and high-voltage, it is characterized in that, the method of described reduction argon arc welding high-frequency and high-voltage, based on the circuit reducing argon arc welding high-frequency and high-voltage as according to any one of claim 1-8, comprises the following steps: on-off circuit (7) cuts out, and circuit does not works；Described on-off circuit (7) is opened, and circuit works；
The concrete steps of described circuit work include:
S1, drive circuit (8) drive inverter circuit (2) work；
S2, described on-off circuit (7) output low level signal give control system (12), and described control system (12) output high level signal gives main control circuit (10), described main control circuit (10) output control relay JD closure signal；
S3, described high frequency transformer secondary connect with boost pressure circuit (4), and described boost pressure circuit (4) is to described high frequency transformer secondary output voltage supercharging；
S4, described boost pressure circuit (4) output high tension voltage, produces the voltage of described high-frequency and high-voltage through described LC oscillating circuit (5), and described high-frequency and high-voltage voltage is through high-frequency and high-voltage output circuit (6) output services；
The voltage of S5, voltage detection module (11) detection major loop；
The Guan Bi of Control of Voltage relay J D that S6, described control system (12) detect according to voltage detection module (11) and disconnection.
The method of reduction argon arc welding high-frequency and high-voltage the most according to claim 9, it is characterised in that: described step S6 specifically includes following steps:
The output voltage of S61, described voltage detection module (11) detection major loop is constant, and control system (12) is failure to actuate；
The output voltage of S62, described voltage detection module (11) detection major loop reduces, and control system (12) output low level signal gives main control circuit (10), main control circuit (10) output control relay JD cut-off signal.
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| CN102773585B true CN102773585B (en) | 2016-08-17 |
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| CN105537729A (en) * | 2016-01-27 | 2016-05-04 | 上海广为焊接设备有限公司 | Circuit for achieving multifunctional welding of double-tube and single-end forward inverter welding machine |
| CN105965125A (en) * | 2016-04-30 | 2016-09-28 | 苏州亿欧得电子有限公司 | Welding method of reed and connecting rod wire, arc discharge welding equipment and control circuit |
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| CN201913354U (en) * | 2010-12-30 | 2011-08-03 | 浙江劳士顿焊接设备有限公司 | Control system for DC (Direct Current) pulse argon arc welding |
| CN102513652A (en) * | 2011-12-06 | 2012-06-27 | 张家港市紫光电焊机有限公司 | DC welding machine |
| CN202877693U (en) * | 2012-08-10 | 2013-04-17 | 深圳市瑞凌实业股份有限公司 | Circuit capable of lowering argon arc welding high frequency and high voltage |
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| JPS63309373A (en) * | 1987-06-11 | 1988-12-16 | Hitachi Seiko Ltd | Arc welding source |
| CN101462197A (en) * | 2008-10-22 | 2009-06-24 | 深圳市鸿栢科技实业有限公司 | High-frequency inversion stud welding equipment and controlling means thereof |
| CN201572991U (en) * | 2009-12-03 | 2010-09-08 | 深圳市华意隆实业发展有限公司 | Welding gun high-voltage isolating circuit used in argon arc welding |
| CN201913354U (en) * | 2010-12-30 | 2011-08-03 | 浙江劳士顿焊接设备有限公司 | Control system for DC (Direct Current) pulse argon arc welding |
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Effective date of registration: 20200326 Address after: Room 207, unit C, building A3, China Merchants science and Technology Park, No. 3009, sightseeing Road, Guangming New District, Shenzhen City, Guangdong Province:2-6 / F, building B, Feiyang industrial technology plant, Liuxian 2nd Road, Xin'an street, Bao'an District, Shenzhen) Room 207, unit C, building A3, China Merchants science and Technology Park, No. 3009, Guangming New District, Shenzhen City, Guangdong Province, 518000 (place of business: floor 2-6, building B, Feiyang Industrial Science and technology plant, Liuxian Second Road, Xin'an street, Bao'an District, Shenzhen) Co-patentee after: KUNSHAN RUILING WELDING TECHNOLOGY Co.,Ltd. Patentee after: SHENZHEN RILAND INDUSTRY Co.,Ltd. Address before: 518000 No. 4 factory building, Fenghuang fourth industrial zone, Fuyong street, Baoan District, Guangdong, Shenzhen Patentee before: SHENZHEN RILAND INDUSTRY Co.,Ltd. |
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Address after: 518133 floor 501 (4-5), building B, Feiyang science and Technology Innovation Park, No.8, Longchang Road, 67 District, Xingdong community, Xin'an street, Bao'an District, Shenzhen City, Guangdong Province:No.4 factory building, Fenghuang fourth industrial zone, Fenghuang community, Fuyong street, Bao'an District, Shenzhen City) 518133 Room 501, building B, Feiyang science and Technology Innovation Park, No.8, Longchang Road, 67 District, Xingdong community, Xin'an street, Bao'an District, Shenzhen City, Guangdong Province Patentee after: Shenzhen Ruiling Industrial Group Co.,Ltd. Patentee after: KUNSHAN RUILING WELDING TECHNOLOGY Co.,Ltd. Address before: Room 207, unit C, building A3, China Merchants Science Park, 3009 sightseeing Road, Guangming New District, Shenzhen, Guangdong 518000:2-6 / F, building B, Feiyang industrial technology plant, Liuxian 2nd Road, Xin'an street, Bao'an District, Shenzhen) Room 207, unit C, building A3, China Merchants Science Park, 3009 sightseeing Road, Guangming New District, Shenzhen, Guangdong 518000 Patentee before: SHENZHEN RILAND INDUSTRY Co.,Ltd. Patentee before: KUNSHAN RUILING WELDING TECHNOLOGY Co.,Ltd. |